143 entries under dull topic. ×

38
sluggish(adjective, hard, weak, easy)
29
languorous(adjective, action, hard, weak)
24
gray(noun, adjective, gloomy, grim)
24
grey(adjective, colour, lead, mousy)
20
heavy(adjective, quiet, weak, easy)
14
gloomy(adjective, obscure, dark, heavy)
14
listless(adjective, action, quiet, weak)
13
torpid(adjective, quiet, weak, easy)
12
languid(adjective, action, weak, easy)
11
slow(adjective, weak, easy, relaxed)
10
ashen(adjective, soft, obscure, lead)
10
inert(adjective, quiet, weak, moving)
9
dingy(adjective, soft, obscure, lead)
9
lackadaisical(adjective, action, quiet, weak)
9
lethargic(adjective, quiet, weak, easy)
9
lifeless(adjective, soft, obscure, flat)
8
boring(adjective, flat, lifeless, dreary)
8
lazy(adjective, quiet, weak, easy)
8
pearly(adjective, lead, gray, mousy)
8
phlegmatic(adjective, quiet, weak, easy)
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APASmart Define. (2015). leaden thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/leaden/thesaurus/synonyms
ChicagoSmart Define. 2015. "leaden thesaurus" https://smartdefine.org/leaden/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, leaden thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/leaden/thesaurus/synonyms>.
MLASmart Define. "leaden thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/leaden/thesaurus/synonyms>